Dealer Signup Information. The 37th National Sports Collectors Convention will be held August 3-August 7, 2016 at the Atlantic City, NJ Convention Center. A limited number of dealer booths are currently still available.ealer Signup Information. The 37th National Sports Collectors Convention will be held August 3-August 7, 2016 at the Atlantic City, NJ Convention Center. A limited number of dealer booths are currently still available.
Carbon has by definition 6 protons. However, its many isotopes can have anywhere from 2 neutrons to 16 neutrons, with 6 neutrons being the most common (~95% of all carbon). Carbon has by definition <b>6 protons</b>.
Carbon-12 is the most common isotope of carbon. Carbon-14 is radioactive and very rare. Carbon-14; 8 neutrons Carbon-13; 7 neutrons Carbon-12; 6 neutrons The symbols for the isotopes of carbon atoms shown here indicate they each have six protons but mass numbers of 14, 13 and 12. These isotopes are not equally abundant.Carbon-12 (C-12) makes up 98.9 % of all carbon atoms while carbon-13 (C-13) makes up 1.1 %.n example of this is shown with the three different isotopes of carbon. Here they all have 6 protons, but different numbers of neutrons. Carbon-14 has 8 neutrons. Carbon-13 has 7 neutrons and carbon-12 has 6 neutrons.